PROBLEM TO BE SOLVED: To provide a double-row self-aligning roller bearing which is advantageously used for receiving different loads, axial load and radial load, on each of rollers of double rows aligned in an axial direction, and which can sufficiently maximize a load capacity of the rollers of the rows receiving the axial load by suitably fixing a rate of a contact angle between the rollers of both rows within a restriction of a dimension standard.;SOLUTION: A double-row self-aligning roller bearing 1 includes an inner ring 2 and an outer ring 3, and double-row rollers 4, 5 therebetween aligned in two rows in a bearing width direction. A raceway surface 3a of the outer ring 3 is in a spherical shape, and an outer surface of the double-row rollers 4, 5 forms a cross-sectional shape along the raceway surface 3a of the outer ring 3. The double-row rollers 4, 5 have different lengths L1, L2. A length L1 of the longer roller 5 is made 39% or more of a bearing width B. A rate of a contact angle θ1 of the smaller roller 4 and a contact angle θ2 of the longer roller 5 falls within a range between 1:2 and 1:4.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT
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